How does the DMV roll to a good number?

Generally speaking, there is no formal way for DMV to get a good number: 1. Form of car purchase: the way to buy a car by lottery is to register for an appointment first, and then participate in lottery. The computer randomly gives 10 numbers, and the person who shakes the number chooses a number from them; 2. The purpose of buying a car to shake the number: in order to alleviate the pressure of traffic jams, in order to be fair, limit the number of new car registrations to ensure better traffic order, which is the same as the effect of single and even numbers on the road before; There are too many cars now, and the roads are full of cars. The traffic control department issued such a policy only because it is impossible to walk. Go to the lottery before buying a car and then go to the 4S shop to buy a car; 4. To be clear, it is a lottery. For example, if 500,000 people want to buy a car in a month, then the license plate index set by the government is only 200,000. Who will decide this 200,000 indicator? Of course, people who can enter the lottery stage are also qualified.